S&CO Inc’s Penumbra PEN Stock Holding History

S&CO Inc’s Portfolio PEN Stock Details PEN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.74M	Hold	5,500	–	–	0.1%	122
2026 Q1	$1.81M	Hold	5,500	–	–	0.11%	117
2025 Q4	$1.71M	Hold	5,500	–	–	0.11%	120
2025 Q3	$1.39M	Hold	5,500	–	–	0.09%	129
2025 Q2	$1.41M	Hold	5,500	–	–	0.09%	132
2025 Q1	$1.47M	Hold	5,500	–	–	0.1%	125
2024 Q4	$1.31M	Hold	5,500	–	–	0.09%	128
2024 Q3	$1.07M	Buy	5,500 +500	+10%	+$94.5K	0.07%	138
2024 Q2	$899K	Buy	5,000 +1,000	+25%	+$200K	0.06%	144
2024 Q1	$892K	Buy	+4,000	New	+$989K	0.06%	140

Other funds holding PEN

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

HBK Investments Dallas, Texas $10.2B AUM 67.73% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

ECM

ExodusPoint Capital Management New York $15.5B AUM 38.81% 1-Year Est. Return

Balyasny Asset Management Chicago, Illinois $80.2B AUM 51.53% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

S&CO Inc's PEN Position: Q2 2026 in Review

S&CO Inc held its Penumbra (PEN) position steady in Q2 2026 at 5,500 shares worth $1.74M. The position accounts for 0.1% of the portfolio, ranked #122.

S&CO Inc first reported a position in PEN in Q1 2024 and has held it in 10 quarters since. The position peaked at $1.81M in Q1 2026. 452 funds tracked by Wall St. Rank hold PEN as of Q2 2026.

S&CO Inc held 5,500 shares of Penumbra worth $1.74M as of Q2 2026.
S&CO Inc left its Penumbra share count unchanged in Q2 2026.
Penumbra made up 0.1% of S&CO Inc's portfolio in Q2 2026, its #122 holding.
S&CO Inc first reported a position in Penumbra in Q1 2024 and has held it in 10 quarters since.
S&CO Inc's Penumbra position peaked at $1.81M in Q1 2026.
452 funds tracked by Wall St. Rank held Penumbra as of Q2 2026.

Based on S&CO Inc's 13F filing for Q2 2026, filed 6 Aug 2026.